Isky because I have them, they work great, and they actually post specs on their site...unlike Bisi who leaves you in the dark about critical things like seat pressure and coil bind
sorry but if i was building a car and didnt want to drop a valve because of abuse, high revs or a large aggressive camshaft i'd buy bisimoto springs every time. they make very very high performing valvetrain components and the price is on the same level as the other guys stuff. cant beat it. and they r&d everything...i doubt isky has for our d's. a $25 difference in price? for $25 bucks id rather bulletproof my build.
Alos for what its worth bisi himself will tell you anything and everything you need to know about his products. some of his lackeys may not have a damn clue but if you get a hold of bisi himself via email youll get the answers you desire....
Isky has been doing performance work since before Bisi's parents were born i bet. Matter of fact Isky was responsible for the creation of Sema, too. For that price i would be all over the Isky stuff, its a great brand and has a long history of quality.
I have had the same set of bisi springs in 2 of my engines now, and the most current engine, the a6 in my sig, has been using them since day one for a year and a half getting beat on every day as my daily. Not one single problem. Engine has revved over 8k many times too.
Ive used both
Both are good and I would use either again.
Considering both will go to 8000rpms without any problems or binding. Not to mention 97% of all n/a Ds wont see anything past 8000rpms anyways. Get whatever you can get a good deal on.
they will both be fine. id go with whatever is cheaper.
if you guys really want to know. i have been running a bonestock y8 motor with bonestock head to 8500 rpm for a year. ive even taken it past that. all on 12 psi
well before i was taking the motor out, just for the hell of it i was just revving it to see how high it would actually go. i bet i hit 9000rpm. ive since bought some bisi springs and getting the cam grinded.
there was something wrong with my ecu whenever id switch to any map it would go to 8400rpm
after hitting rev limit 10 times i just left it at 8400rpm.
Whenever I set my rev limiter, it's going to be where the power stops. There's no point in keepin on keeping on if your not gaining anything out of it.
Sence both springs are obviously well suited, get the ones that leave a little cheddar in your pocket. If you get what I'm saying
Isky has been doing R&D on valve train components since the side valve Ford V8 was the hot ticket.
I was inclined to buy Bisimoto when I first started here, but seeing how he and his staff treated people here for fair comment convinced me he simply is not a suitable person or organisation to do business with.
It started when Ron (RDC) asked why his cam had no cam card. The arrogance, misinformation, lies and failure to deliver what was very reasonably expected was plain disgusting. It also in my view had some strong racial overtones based on the fact that Ron being Indian did not get what some Americans got. There have been at least two similar incidence since.
What R&D. He uses someone elses springs after they give him their specs and if they test OK, he puts his name and mark up and claims to have reinvented the world.
Grade of wire, heat treatment, data on tension at a specified height, data on coil bind height and spring rate are all obtainable from real reputable suppliers without having to bypass staff and hope the owner might condescend to give you the inside dope if he decides he likes you. Also verbals allow him to make claims that might not stand up to the level of accuracy required to avoid legal action if written.
Isky will be fine. They are a good company with a first rate product and service.
Apart from the specs on the wire and the pressures vs height, something to look for is the finish at the ends of the springs where the wire is cut. There should be no bits that are sharp, notched or likely to propagate a crack. If the price is right you can polish that bit yourself.
Isky has been doing R&D on valve train components since the side valve Ford V8 was the hot ticket.
I was inclined to buy Bisimoto when I first started here, but seeing how he and his staff treated people here for fair comment convinced me he simply is not a suitable person or organisation to do business with.
It started when Ron (RDC) asked why his cam had no cam card. The arrogance, misinformation, lies and failure to deliver what was very reasonably expected was plain disgusting. It also in my view had some strong racial overtones based on the fact that Ron being Indian did not get what some Americans got. There have been at least two similar incidence since.
Unfortunatly I was in on the group buy during that time and I am another that will say, the first and last time I will ever buy anything from them. Everything is overpriced and the quality of customer service was extremely lacking. Anyone that would add a signed self portrait in the items shipped except the actual useful information like a Cam Card is just full of himself. That went right where it belonged....
How hard it will rev with a certain spring depends on how aggressive the cam accelerates the valve. A spring that will go to 9000 on a stock cam without floating might float or bounce at 8000 on a high lift aggressive lift rate cam.
Strong springs that won't float or bounce might coil bind with a lot of lift.
Lets not forget that Web Cams is responsible for all of Bisis Cams?
I would just order straight form Web Cams and leave the Bisi hassle to somebodyèlse.
Its so funny how most of the people on this site think that they actually need Bisi to make any N/A power. Lol.
yeah, mine was personalized with my name on it. I guess they want to try and make their customers feel "special." I felt more offended than anything else, and although I am not homophobic,... it seemed a little gay to have my name associated with that so,... as soon as I saw it, I used it as my bbq charcoal starter
I agree you may not need bisimoto the company to go fast n/a style in a D...
but his r&d is still on point....web uses his profiles for a reason. Any all out single cam builds use his cams and usually his valvetrain products (go-auto builds and SF come to mind).
Hey I dont really care, everyone is entitled to an opinion. Im just tired of hearing (cam cards, no info etc...) its not hard to get that info at all...just SEARCH! The very thing we tell a thousand noobs a day to do. Send him an email. Call him on the phone. You can get the info EASILY. And dont tell me you cant. I have all the info i need to install my cam and springs perfectly.
Theres a reason he doesnt want his products "exact" specs posted everywhere. He's trying to run a business and protect his research and design from being stolen. There's no cam cards in the box because any competitior can (and HAS) bought his product and scammed his design. Blame them for it. They dont want to pay to do real R&D.
Sorry if i upset anyone, I know Isky is a great brand too and im not going to take anything away from them but based on my experiences with bisimoto and the products they have personally sold to me (header, cam, springs, rods, and cam gear) i would take theirs over isky any day. Especially since its the same price or cheaper in this case.
When this thread started i knew everyone would say "get isky"....bisis this and that...I just figured the OP may like to hear from the other side.
I bought a moroso degree wheel and will use my fathers timing light to check everything. I also knew i'd have problems and would have to degree it myself going in. I liked the no slip design...and its shiny
No really I just have some money into the bottom end and dont want to damage it simply because a gear slips...plus at the time AEMs 3 bolt gear was famous for it and skunks y7 gear was more $.
Really, i would have wanted to degree everything anyway. I want to get the most out of my build.
Bisi is hit or miss now a days........not like when he fisrt started and he was actually hands on with his products.
From somebody who has bought many Bisi parts in the past I will look and have gone elswhere for my parts. I refuse to support any company that thinks there better then there customres and better and bigger then an entire community.
i do agree with this based on some of his responses...no one is bigger or better than the community who got them where they are. the "arrogance" thing irks me...and i havent supported bisi at all when i see it first person.
Web doesn't "Use" Bisi's cam profiles. They grind them for him. Web has their own profiles, developed from a billion years of combined experience and about the best dang quality grind you can get for a D.
Information IS hard to get from Bisimoto. Bisi has not replied to inquiries I've made about my own products OR the very poor customer service I have recieved from his salesmonkies.
YOU are the one being ignorant when YOU refuse to accept the fact that not everyone CAN get the basic, generally accepted industry-wide (at least for the aftermarket industry of just about EVERY other market segment on the planet), which doesn't mean that no one is going to 'steal' a grind. Give the customers the information they want and sometimes NEED in order to properly install/use a product. Blaming scammers and thieves for not providing basic information because you are afraid of someone taking specs and making poor copies of the thing is just self-defeating and frustrating for customers.
I can categorically state that I am NOT a newb of the interwebs. I HAVE been around long enough to know a few things, have seen a few things and read about a crapload more things. Your attitude is like a young punk trying to tell an old timer "I'm hardcore!" and the old-timer asks him "Well, did you see 20 of your best friends die in a firefight and close quarters combat when the only thing you could try to do was survive to the next minute and you didn't even know you would live to see the end of the day?" You're a pissant with an ignorant attitude. I couldn't care less how old you are, what your post count is, or where you are from. You are an idealistic idiot.
You HAVE upset me. And you know what? It doesn't even matter. Go on ignoring FACTS from reliable sources about things that are outside the realm of your own limited existence.
Fact:
Bisimoto doesn't make anything that goes inside an engine in house, to my knowledge. The cams are ground at Web. The valve train parts come from several different sources and, they are NOT unique. The pistons are made by Arias, though some of the custom ones are to Bisi's interesting specs. The cam gears are made (poorly) based on Bisi's own designs. The rods come from various sources. The engine management stuff comes from different sources. The rims are made outside. Etc. And you know what? That's generally GOOD. But, it IS NOT good when you pay a premium for a product, over the cheapest prices you could find on eBay, and then you get CRAP customer service, ignorant sales people and an ATTITUDE when you request information that almost without exception is the norm in the ENTIRE INDUSTRY.
So, )(*$ you, pissant. You're on my crap list for being a douchetard. Again, I know it doesn't matter. Because someone might just be wrong on the internet. That's about as important as Charlie Sheen's effect on the gravitational pull of Jupiter.
i respect everyones input on this site and i completely understand when people have issues with bisimoto. I have went to bat for members in threadswho get a raw deal from them....the last one was the level x cam that went to india.
i just wanted to say my personal experiences with them werent bad...thats all
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